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Finding the Fourth Proportional to 467,674.05, 644,959.77 and 306,470.55

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Solution

The fourth proportional to 467,674.05, 644,959.77 and 306,470.55 is: 422,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,674.05 : 644,959.77 = 306,470.55 : x
  2. Step 2: Convert to fraction form
    467,674.05/644,959.77 = 306,470.55/x
  3. Step 3: Cross multiply
    467,674.05x = 644,959.77 × 306,470.55
  4. Step 4: Simplify right side
    467,674.05x = 197,661,175,439.77
  5. Step 5: Solve for x
    x = 197,661,175,439.77/467,674.05
  6. Step 6: Final answer
    x = 422,647.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.